[INFO] fetching crate statslib 0.1.0...
[INFO] testing statslib-0.1.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate statslib 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate statslib 0.1.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate statslib 0.1.0
[INFO] finished tweaking crates.io crate statslib 0.1.0
[INFO] tweaked toml for crates.io crate statslib 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 171d7c21e8316f25dae4c111b9854baaa53a3895649e415d14a0d7ae9bf624cf
[INFO] running `Command { std: "docker" "start" "-a" "171d7c21e8316f25dae4c111b9854baaa53a3895649e415d14a0d7ae9bf624cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "171d7c21e8316f25dae4c111b9854baaa53a3895649e415d14a0d7ae9bf624cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "171d7c21e8316f25dae4c111b9854baaa53a3895649e415d14a0d7ae9bf624cf", kill_on_drop: false }`
[INFO] [stdout] 171d7c21e8316f25dae4c111b9854baaa53a3895649e415d14a0d7ae9bf624cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47fbf094d732a19030aa5dc128d0b10872b0ef480f54221591afd61897f12a94
[INFO] running `Command { std: "docker" "start" "-a" "47fbf094d732a19030aa5dc128d0b10872b0ef480f54221591afd61897f12a94", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]    Compiling slog-async v2.7.0
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling thread_local v1.1.4
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling matrixmultiply v0.3.2
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling slog-term v2.9.0
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling approx v0.4.0
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling simba v0.4.0
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
[INFO] [stderr]    Compiling nalgebra v0.26.2
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling slog-json v2.6.1
[INFO] [stderr]    Compiling argmin v0.4.7
[INFO] [stderr]    Compiling statslib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `ArrayStorage`, `Matrix2`
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nalgebra::{ArrayStorage, Matrix2};
[INFO] [stdout]   |                ^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ParamsLM`
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct ParamsLM {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.17s
[INFO] running `Command { std: "docker" "inspect" "47fbf094d732a19030aa5dc128d0b10872b0ef480f54221591afd61897f12a94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47fbf094d732a19030aa5dc128d0b10872b0ef480f54221591afd61897f12a94", kill_on_drop: false }`
[INFO] [stdout] 47fbf094d732a19030aa5dc128d0b10872b0ef480f54221591afd61897f12a94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ead33e81ae580ee7c4ec6c632a6c66de692774f03cd0bc65dcf7405ab5e24d6
[INFO] running `Command { std: "docker" "start" "-a" "6ead33e81ae580ee7c4ec6c632a6c66de692774f03cd0bc65dcf7405ab5e24d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling statslib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `ArrayStorage`, `Matrix2`
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nalgebra::{ArrayStorage, Matrix2};
[INFO] [stdout]   |                ^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ParamsLM`
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct ParamsLM {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ArrayStorage`, `Matrix2`
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nalgebra::{ArrayStorage, Matrix2};
[INFO] [stdout]   |                ^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ParamsLM`
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct ParamsLM {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.49s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/statslib-a3bffcbe9e914a5c)
[INFO] running `Command { std: "docker" "inspect" "6ead33e81ae580ee7c4ec6c632a6c66de692774f03cd0bc65dcf7405ab5e24d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ead33e81ae580ee7c4ec6c632a6c66de692774f03cd0bc65dcf7405ab5e24d6", kill_on_drop: false }`
[INFO] [stdout] 6ead33e81ae580ee7c4ec6c632a6c66de692774f03cd0bc65dcf7405ab5e24d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7887b2927240e2e7c981c2f05c7f328be0450847e7fec339548e685a9fbb59a7
[INFO] running `Command { std: "docker" "start" "-a" "7887b2927240e2e7c981c2f05c7f328be0450847e7fec339548e685a9fbb59a7", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `ArrayStorage`, `Matrix2`
[INFO] [stderr]  --> src/linear_models/simple_regression.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use nalgebra::{ArrayStorage, Matrix2};
[INFO] [stderr]   |                ^^^^^^^^^^^^  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ParamsLM`
[INFO] [stderr]  --> src/linear_models/simple_regression.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | struct ParamsLM {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `statslib` (lib) generated 2 warnings
[INFO] [stderr] warning: `statslib` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/statslib-a3bffcbe9e914a5c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests statslib
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7887b2927240e2e7c981c2f05c7f328be0450847e7fec339548e685a9fbb59a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7887b2927240e2e7c981c2f05c7f328be0450847e7fec339548e685a9fbb59a7", kill_on_drop: false }`
[INFO] [stdout] 7887b2927240e2e7c981c2f05c7f328be0450847e7fec339548e685a9fbb59a7